On Sat, Apr 26, 2025 at 11:04 PM Alexander Korotkov
<aekorotkov@gmail.com> wrote:
> On Sun, Apr 6, 2025 at 12:02 AM Alena Rybakina
> <a.rybakina@postgrespro.ru> wrote:
> > Should we add more regression tests covering these cases?
> >
> > I experimented with some examples like this and noticed that it does affect cardinality estimation, though I'm not
surethe impact is significant.
> > I used the tables from the regression tests, so if they’re appropriate for reproducing this case, it should be
straightforwardto add them.
>
> Thank you for your feedback. I've check the cases you've provided. I
> found that the differences here are related to the SJE itself, not to
> changes regarding PHVs handling. I think it generally OK that
> estimates are somewhat changed due to such significant query
> transformation. Hopefully they should be improved in the majority of
> cases.
>
> I did some improvements to PHVs patch: revised comments and commit
> message. I'm going to push it if no objections.
Uh, v2 was there already. That should be v3.
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Regards,
Alexander Korotkov
Supabase
